APPLICATIONS:Fits Metal Roofs with 1" high seams up to 0.640" wide and 1" high. Fits most 1" high double lock, single-lock, snap-lock, T-seams and others. Aluminum snow guards are not recommended for use on copper roofs (use bronze or copper).Symmetrical design rotates 180 degrees to match seam lock orientation. DESCRIPTION:Berger SL series snow guards are non-penetrating devices which are secured to the standing seams of metal roofs utilizing stainless steel set screws to clamp them in place. They require no glues or sealants, and will not restrict thermal movement or contribute to unsightly oil-canning. They are particularly suited to double-lock and mechanically seamed metal roofing, and being traditional in design, they are ideal for restoration and preservation work.OPTIONS: Available in mill finish cast aluminum, primer finish and custom color painted (3 week lead time, special order non-returnable item).